Animals Leave Their Skeletons Behind

Animals Leave Their Skeletons Behind

Funny pictures about Animals Leave Their Skeletons Behind. Oh, and cool pics about Animals Leave Their Skeletons Behind. Also, Animals Leave Their Skeletons Behind photos.

Darwin’s first sketch of the tree of life from one origin. Note the cross-bars for extinction — and that change is not conceived with some direction-as-progress. And notice Darwin’s simple words introducing the sketch, “I think…”

Darwin’s first sketch of the tree of life from one origin. Note the cross-bars for extinction — and that change is not conceived with some direction-as-progress. And notice Darwin’s simple words introducing the sketch, “I think…”

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